Great stuff! This is one of those interesting cases where the nature of the tool doesn't change the work. The hole in the fabric is indistinguishable from one made with a long cone of copper alloy, ivory or carbon fibre composite. If you're using the tool in front of the public, or even in front of other re-enactors in a context where they might assume you're using something authentic, it's suddenly important that it be authentic. I appreciate the effort you've put into documenting these tools and if I were a retailer that sold bone awls to re-enactors in some quantity I'd be sweating right now... >> For my own unpicking, I use the tips of a pair of snips, held closed. They work for both cutting and picking threads, which is handy, but I am yet to document small ~100mm spring snips either, so they're no authentic substitute for the quick unpick until proven otherwise.
The tip of snips are a a great way to unpick, I use this technique myself from time to time. We have definitely seen these bone awls for sale as accurate tools.
